Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2012

Commitments and Contingencies Disclosure [Abstract]

Future minimum rentals and minimum rentals to be received under subleases for leases having initial or remaining noncancelable lease terms in excess of one year

As of December 31, 2012, our future minimum rentals and minimum rentals to be received under subleases for leases having initial or remaining noncancelable lease terms in excess of one year were as follows (in millions):

2013	$	337
2014	250
2015	179
2016	133
2017	86
Thereafter	350
Total minimum rental payments	$	1,335
Minimum rentals to be received under subleases	$	30

Consolidated rental expense for all operating leases

Rental expense was as follows (in millions):

	Year Ended December 31,
	2012			2011			2010
Minimum rental expense	$	508		$	523		$	485
Contingent rental expense	23			23			23
Total rental expense	531			546			508
Less sublease rental income	(2		)	(2		)	(3		)
Net rental expense	$	529		$	544		$	505